Fastening device.



E. LUDEKE. nys'mme DEVICE. APPLICATION FILED JUNE 7. I917- Patented Jul so, 19 1s. 29- 5 29 2 W mun/ w INVENTOR ibis ATTORNEYS nrrzns co.. rnomumuq wAsmnamn, n. c,

shown in loc EMIL LUDEKE, oF'RocHEsTER, NEW YORK.

FASTENING DEVICE.

, Specification of Letters Patent. Patented J 1918.

Application filed June 7, 1917. Serial No. 173,280.

To all whom itmay concern: I

Be it known that I, EMIL LUDEKE, of the city of Rochester, county of Monroe, and State of New York, have invented certain new and useful Improvements in Fastening Devices; and I do hereby declare the followiug to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, formin a part of this specification, and to the re erence characters marked thereon.

My invention has for its object the provision of a novel form of fastening device in the'nature of a separable fastener susceptibleof various uses where it is desirable to temporarily secure togethertwo or more sections or laps of material or for holding "a flexible sheet of material in place upon as will be hereinafter more fully described,

the novel features beingpointed out in the claims at the end of the specification.

In the drawings: Figure 1 is a plan view illustrating one of the separable members, according to a preferred embodiment of the invention and showing the actuating lever in locked position; '5

Fig. 2 is a bottom plan view of the same; Fig. 3 is a plan view of the other cooperating separable member; 7

Fig. 41st sectional view on the line 4 4'of Fig.2, showing the actuator lever in released position in full lines and in locking position in dotted lines;

Fig. 5 is a sectional view taken in the plane of Fight with the actuatinglever "ng position, and illustrating the application of the invention to a plurality of fastening devices, nested one upon theother, and Y Y r 1 i Fig. 6 is a sectional view on the line 6 of Fig.- 5, with the actuating lever of the outermost fastener released.

Similar reference characters throughout the several views indicate the same parts.

The structure which I am about to de scribe is illustrative of the invention in its application to vehicle curtain fasteners, but

it will be understood that'the invention is not to be limited or confined to any of the structural details herein shown, asit is apjphcable in a variety of ways, wherever it is necessary 'to detachably secure one part to another. In the resent structure, drawings of which are on arged to about twice the actual size in order to afford a full'understanding of the relation and operation of the parts, 1 designates generally one of the separable members of thefastener which is recessed centrally at 2, affording locking shoulders 3 which are 0 positely "dispose preferably in parallel 'reation' and engage the retaining members to be described reslugs tat 'its opposite ends by 'which'it is attached to the curtain sectionor other part with which it is used,,as usual in thlsclass The central portion of the of structures. 7 member lis arranged outwardly from the lugs 5 and connected by the outwardly bent portions 6, thus affording the necessary space within the recess 2 forhousing the retaining members of the other cooperating member of the fastener, asshown in Fig. 4:.

The other of the two cooperating separable members is shown in Figs. 1, Qand 4,

and comprises an outer plate 7 having lugs 8 which extend through thefabric-to which "the device is attached and overlie, on the underside, a plate 9. The latter is cutaway at its central portion, as indicated by 10, and is provlded' at opposite sides of said gral with the plate Sand are slightly'resilicut, their. inner or base portions: extending slightly away from. each other, so as to readily lock against the shoulders-3" when spread, and their outer portions orjends V eutly. Thepart just described also inc udes I opening with the outwardly'bent lugs 11.

being bent toward each other and 'afiord- I opening and the aforementioned opening 10 of the inner plate 9 so asto be operable for spreading the retaining lugsll. The .actu- V ating lever embodies trunnionsl i'engaging openings in the lugs 11 for pivotal movement thereon, while 15 designates a finger piece by which the lever is operated and which when in normal or locked position extends in the plane of the outer face of the-plate 7 and lies in a depression or recess 15 formed in the plate forthis purpose. The actuating lever includes cam surfaces for engagement with the resilient locking lugs and to this end it is provided with an extension or projecting flange 16, whichis prefera'bly bifurcated or cut away at 17, whereby its ends are slightly yieldabletoward each other. The projecting flange 16 has at its outer ends cam surfaces or edges 18 which engage the cam faces 12 on the lugs when the lever is swung about its axis, moving the outer portions of the resilient lugs from the position shown in full lines in Fig. 4t to the position shown in dotted lines. This action causes the lugs 11 to bite against and slightly overlie the locking shoulders 3 of the cooperating member, thereby holding the two members together. The actuating lever is held in looking position by frictional engagement, and 'to release the parts, the finger piece 15 is moved outwardly to the position 'shownin full lines in Fig. 4 and in dotted lines in Fig. 6. The separable member 1 is provided with cutaway portions or recesses 19 to accommodate the ends of the trunnions 1st in positioning the parts, as will appear from Fig. 4.

Figs. 5 and 6 illustrate a slightly modified use of the improvement in which one fastener may be nested upon another, and in such case, it will be seen that the opening 13 in the plate 7 affords locking shoulders, designated at 20 in Fig. 5, to receive the cooperating locking lugs upon the adjacent member, and this is sometimes desirable where it is necessary to fasten two or three plies of material, one upon the other. The plate 7 is provided with depressed portions or recesses 21 which, together with the space above the finger piece 15, when the latter is in locked position, receive the lugs 8 of "the coeperating fastener member, when two or more fasteners are nested.

I claim as my invention:

1. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of lockingshoulders and the other of which carries a plurality of retaining members engage able in "said recess, and a pivoted actuating lever controlling said retaining members and acting when turned about its axis to move them into engagement with the looking shoulders.

2. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of locln'ng shoulders and the other of which carries a plurality of retaining members,

tainin members and a oivotall mounted actuating lever cooperating with said retaining membe s when moved to spread them apart so as to engage the locking shoulders.

i. A fastening device comprising a pair of separable meinbers, one of which is re cessed and provided with a plurality of locking shoulders, and the other of which carries a plurality of oppositely disposed retaining members, and a pivoted actuating lever having cam surfaces controlling the retaining members acting when the lever is turned about its axis to move the retaining members into engagementwith said shoulders.

5. A fastening device comprising a pair of separable members, one of which is re cessed and provided with a plurality of locking shoulders and the other of which carries a plurality of resilient lugs which are engageable in said recess, and an actuating lever cooperating with said lugs to move them into engagement with said shoulders.

6. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of locking shoulders and the other of which carries a plurality of resilient lugs which are engageable in said recess, and a pivoted actuating lever held frictionally in looking position and having cam surfaces acting to move the lugs into engagement with said shoulders. v

7. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of locking shoulders and the other of which carries a plurality of resilient lugs which are 'engageable in said recess, and havingtheir out-er ends bent inwardly toward each'other affording cam faces, and an actuating lever having edges which engage said cam faces on the lugs and spread the lugs apart to engage said shoulders.

8. A fastening device comprising a pair of separable members, one of which is re cessed and provided with a plurality of locking shoulders and the other of which carries a plurality of resilient lugs which are engageable in said recess and having their outer ends bent inwardly towardeach other aifording cam faces, and an actuating lever pivoted in bearings in said lugs and having extensions aflording cam surfaces for engagement with saidcam faces on the lugs.

9. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of locking shoulders and the other of which carries a plurality of resilient lugs which are engageable in said recess, and having their outer ends bent inwardly toward each other affording cam faces, and an actuating lever pivoted in bearings in said lugs and having a projecting flange affording cam surfaces at its ends for engagement with said cam faces on the lugs, and cut away at its central portion to permit slight yielding of the cam surfaces toward each other.

10. A fastening device comprising a pair of separable members, both of which are recessed, the one having a plurality of looking shouldersfand the other having a pair of oppositely disposed resilient lugs. and a pivoted actuating lever extending through the recess in the last mentioned member and having cam surfaces for engagement with the lugs, and a finger piece on the lever.

11. A separable fastener member having a recess affording locking shoulders, a pair of oppositely disposed resilient retaining lugs, and an actuating lever having cam surfaces arranged to engage and spread said lugs.

12. A separable fastener member having a recess affording locking shoulders at one side, resilient retaining lugs on the other side, and an actuating lever extending through said recess having cam surfaces engaging said lugs and-a finger piece arranged to lie adjacent to said locking shoulders when in locking position.

13. A fastening device comprising a pair of separable members, one of which is recessed and provided with a plurality of looking shoulders and the other of which carries a plurality of resilient retaining members, and an actuating lever cooperating with said retaining members and operable to move them into engagement with said shoulders.

14. A fastening device comprising a pair of separable members, one of which is re-' cessed and provided with a plurality of looking shoulders and the other of which carries a plurality of resilient retaining members, cam faces on the retaining members, and a EMIL LUDEKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

